<template>
  <div class="xtx-cart-page">
    <div class="container">
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem>购物车</XtxBreadItem>
      </XtxBread>
      <div class="cart">
        <!-- 展示购物车详细列表 -->
        <table>
          <thead>
            <tr>
              <th width="120">
                <XtxCheckBox :modelValue="isAll" @update:modelValue="checkAll"
                  >全选</XtxCheckBox
                >
              </th>
              <th width="400">商品信息</th>
              <th width="220">单价</th>
              <th width="180">数量</th>
              <th width="180">小计</th>
              <th width="140">操作</th>
            </tr>
          </thead>
          <!-- 有效商品 -->
          <tbody>
            <tr v-for="i in effectiveList" :key="i.skuId">
              <!-- 商品单选
              现象：v-model绑定vuex中的数据，会直接修改vuex数据=》出问题！！！1. 没有改成功 2. 严格模式报错
              原因：vuex中的数据通过mutation修改的
              解决：不让v-model直接修改vuex中数据=>v-model完整写法
              方案：v-model(语法糖) === modelValue + @update:modelValue
              说明：$event可以获取子传父的值
              -->
              <td>
                <XtxCheckBox
                  :modelValue="i.selected"
                  @update:modelValue="singleCheck(i, $event)"
                />
              </td>
              <td>
                <div class="goods">
                  <RouterLink to="/"
                    ><img :src="i.picture" alt=""
                  /></RouterLink>
                  <div>
                    <p class="name ellipsis">
                      {{ i.name }}
                    </p>
                    <!-- 选择规格组件 -->
                  </div>
                </div>
              </td>
              <td class="tc">
                <p>&yen;{{ i.nowPrice }}</p>
                <p>
                  比加入时降价
                  <span class="red"
                    >&yen;{{ (i.price - i.nowPrice).toFixed(2) }}</span
                  >
                </p>
              </td>
              <td class="tc">
                <!-- 商品数量修改 -->
                <XtxNumbox
                  :modelValue="i.count"
                  @update:modelValue="changeCount(i, $event)"
                  :isShowLabel="false"
                />
              </td>
              <!-- 单价*数量 -->
              <td class="tc">
                <p class="f16 red">
                  &yen;{{ (i.nowPrice * i.count).toFixed(2) }}
                </p>
              </td>
              <td class="tc">
                <p>
                  <a class="green" @click="delProd(i)" href="javascript:;"
                    >删除</a
                  >
                </p>
              </td>
            </tr>
          </tbody>
        </table>
      </div>
      <!-- 操作栏=> 选中的有效商品信息 -->
      <div class="action">
        <div class="batch">
          共 {{ effectiveList.length }} 件商品，已选择
          {{ selectedEffectiveList.length }} 件，商品合计：
          <span class="red">¥{{ selectedEffectiveListTotal.toFixed(2) }}</span>
        </div>
        <div class="total">
          <XtxButton @click="goOrder" type="primary">下单结算</XtxButton>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Message from '@/components/Message'
import { mapGetters, useStore } from 'vuex'
import { useRouter } from 'vue-router'

export default {
  name: 'XtxCartPage',
  computed: {
    ...mapGetters('cart', ['effectiveList', 'effectiveListCounts', 'selectedEffectiveList', 'selectedEffectiveListTotal', 'isAll'])
  },
  setup () {
    const store = useStore()
    const router = useRouter()
    console.log('store:', store)
    // 商品单选
    const singleCheck = (good, selected) => {
      console.log('商品是否选中：', good, selected)
      store.dispatch('cart/singleCheckAction', { good, selected })
    }
    // 商品全选
    const checkAll = (selected) => {
      store.dispatch('cart/checkAllAction', selected)
    }
    // 删除商品
    const delProd = (good) => {
      store.dispatch('cart/delCartAction', good)
    }
    // 修改商品购买数量
    const changeCount = (good, count) => {
      // console.log('修改商品购买数量:', good, count)
      store.dispatch('cart/changCountAction', { good, count })
    }

    // 下单
    const goOrder = () => {
      /**
       * 1. 必须登录
       * 2. 必须选中一件购物车中的商品
       */
      if (!store.state.user.profile.token) {
        return Message({ text: '请先登录！' })
      }
      if (store.getters['cart/selectedEffectiveList'].length === 0) {
        return Message({ text: '请选择买啥？' })
      }
      router.push('/settlement')
    }
    return { singleCheck, checkAll, delProd, changeCount, goOrder }
  }
}
</script>
<style scoped lang="less">
.tc {
  text-align: center;
  .xtx-numbox {
    margin: 0 auto;
    width: 120px;
  }
}
.red {
  color: @priceColor;
}
.green {
  color: @xtxColor;
}
.f16 {
  font-size: 16px;
}
.goods {
  display: flex;
  align-items: center;
  img {
    width: 100px;
    height: 100px;
  }
  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;
    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}
.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;
  .xtx-checkbox {
    color: #999;
  }
  .batch {
    a {
      margin-left: 20px;
    }
  }
  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}
.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}
.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;
    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;
      th,
      td {
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;
        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }
      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>
